Architectural · A-GE9PW

Shaft Wall and Ceiling Junction Detail

Materials

Steel Cold-formed Steel Timber / Wood Metal (misc.)Gypsum / Drywall

Elements

About this detail

The scheduled rated wall is constructed with a 20-gauge steel J-runner anchored to the structure above using power-actuated fasteners sized and spaced as required. The cavity contains 4-inch 20-gauge C-H steel studs and a 1-inch shaft wall liner, faced on one side with two layers of 5/8-inch Type X gypsum board. The framing contractor provides metal stud blocking in the cavity for positive attachment at the ceiling intersection, finished with J-metal trim and fire-rated sealant. A separate ceiling detail shows a 3-5/8-inch metal stud anchored to the structure above, intersecting an acoustical ceiling panel with a variable 4-inch drop per the reflected ceiling plan. Construction must comply with UL number U438, ICC report NER-258, and UL number U411 for a 2-hour fire rating.

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